Ipad for Sale?

Thanks John for the input. I will take all the information that I can get into consideration.

You don't need actual cellular service for the internal gps chip to function. Ebay or cragslist would be good places to look also. I don't know about the Sentry, but I believe with a Stratux the iPad doesn't even need its own gps chip. I find my Garmin Aera660 is much more readable than my iPad. Others report the Samsun Galaxy tablets are better than an iPad which might also be an option if they work with a Sentry.

My Ercoupe came with Sentry Skybeacon ADS-B out gear installed, but no Ipad to go with it. My son has convinced me to buy an Ipad with GPS to go in the plane. So, since the Garmin 496 navigator is hard for me to see due to the glare, I'd like to go ahead and try one.

I am looking to buy a used TMobile compatible 6" Ipad Mini. 
Has anyone got one they'd sell? What price would you like to get?